From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A9DD1C4345F for ; Fri, 19 Apr 2024 09:29:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rxkZ7-00071G-Rq; Fri, 19 Apr 2024 05:29:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rxkYr-0006mD-G7 for qemu-devel@nongnu.org; Fri, 19 Apr 2024 05:29:41 -0400 Received: from mail-pg1-x536.google.com ([2607:f8b0:4864:20::536]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rxkYp-00063l-85 for qemu-devel@nongnu.org; Fri, 19 Apr 2024 05:29:36 -0400 Received: by mail-pg1-x536.google.com with SMTP id 41be03b00d2f7-5c6bd3100fcso1140527a12.3 for ; Fri, 19 Apr 2024 02:29:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1713518973; x=1714123773; darn=nongnu.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=H6fE9CuDo1fBdkRXcytKrDDysxsdzdFMOMAWNIyYGbQ=; b=csQJmRjZ4nlhcTucNo2M6An8aaci0SI7P0AIYz9Z6e1XsUDMshLxqvfJAy3+2syFoE ViX27zjolsECEXZzdWdbwidvJ7XQuuGPtZpw7AuoJjnTuBFSuXCczC7rthwDFN4ORlIU 88WGMdaPni7Wa5pwvOM4hpVLbqeXzmASHzsktuTOXB0OAdkx8vXyZIFfsDwA/5yvZrKJ 13V/AdHnxOnQb8rK+E4F1hAnTe4XSFu98/10HoX5wu/SvrAO6T5Vi/I7Uh4G5OFiHxZP IRIigzmgSAtWofE0f04metbjJjY1sbsZgqbh2aKC2Ngp6383rWXibf+q25brndaMIJHE frRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713518973; x=1714123773; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=H6fE9CuDo1fBdkRXcytKrDDysxsdzdFMOMAWNIyYGbQ=; b=AawZRRo2qEUf5r4WdRuzZoyGGl5EdG7Cwl5fEEgIltELibnHHm9PSKZ48A5S23Or6e CHuSNM0J2e7hYm5h1TzDT3OqxMzgNFZynXNUraklqR95R50Y4zbQCRUdUFx2SOdIDdqG mDe8w1i15F/n3Iu+juX+SO9+cKuEPB7ML/yEiptincVSdnGSIBkImDt2Swl/0ReCnC8h /VqlBc1WURjnQUEE9WyNA7QntqGUpvLGgM3Q+LYswlrdwO9a0pEzzJiVAnpnpVPszTtq 4JFu2GBvHI4gWqKLS9qZecAVfOwwZ2LH9XV1TNACp0lBBYK/v8ks9/g4lyXXq9Z9liSJ SsOQ== X-Gm-Message-State: AOJu0YwfBx7F1msGhC9DwiZDZ31alncnu1W9Ao/AU5HkN9tzzwIbISWF /adIr49bxHX2oAuHDyiMr1fO8UxzRvqm9i6DqIC60/9cEUBiFap3l/muIBdQO9c= X-Google-Smtp-Source: AGHT+IEEBf1vvnH9cxOYtVq/DOvMDShO9NXD6Zy+UTA4Px7fjPoWj5qkT3nK2cUzNOIb/0waDQcNww== X-Received: by 2002:a05:6a20:12ce:b0:1aa:590a:9668 with SMTP id v14-20020a056a2012ce00b001aa590a9668mr1864051pzg.51.1713518972816; Fri, 19 Apr 2024 02:29:32 -0700 (PDT) Received: from [157.82.207.134] ([157.82.207.134]) by smtp.gmail.com with ESMTPSA id fj33-20020a056a003a2100b006ef97508163sm2832286pfb.37.2024.04.19.02.29.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Apr 2024 02:29:32 -0700 (PDT) Message-ID: Date: Fri, 19 Apr 2024 18:29:26 +0900 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 09/11] virtio-gpu: Resource UUID Content-Language: en-US To: Dmitry Osipenko , Huang Rui , =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , Gerd Hoffmann , "Michael S . Tsirkin" , Stefano Stabellini , Anthony PERARD , Antonio Caggiano , "Dr . David Alan Gilbert" , Robert Beckett , Gert Wollny , =?UTF-8?Q?Alex_Benn=C3=A9e?= Cc: qemu-devel@nongnu.org, Gurchetan Singh , ernunes@redhat.com, Alyssa Ross , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?Q?Christian_K=C3=B6nig?= , Xenia Ragiadakou , Pierre-Eric Pelloux-Prayer , Honglei Huang , Julia Zhang , Chen Jiqian , Yiwei Zhang References: <20240418190040.1110210-1-dmitry.osipenko@collabora.com> <20240418190040.1110210-10-dmitry.osipenko@collabora.com> From: Akihiko Odaki In-Reply-To: <20240418190040.1110210-10-dmitry.osipenko@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: none client-ip=2607:f8b0:4864:20::536; envelope-from=akihiko.odaki@daynix.com; helo=mail-pg1-x536.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2024/04/19 4:00, Dmitry Osipenko wrote: > From: Antonio Caggiano > > Enable resource UUID feature and implement command resource assign UUID. > UUID feature availability is mandatory for Vulkan Venus context. > > UUID is intended for sharing dmabufs between virtio devices on host. Qemu > doesn't have second virtio device for sharing, thus a simple stub UUID > implementation is enough. More complete implementation using global UUID > resource table might become interesting for a multi-gpu cases. Isn't it possible to add two virtio-gpu devices even now? A new subsection should also be added for migration compatibility; see: docs/devel/migration/main.rst